Alert archive / Florida / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 154, NWS Mobile, AL

July 12, 2000Okaloosa County, Florida

NWS Mobile, AL issued this severe thunderstorm warning at Jul 12, 2000, 2:14 PM CDT for Okaloosa County, Florida. It was in force for 31 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 12, 2000, 2:14 PM CDT (19:14 UTC)
Expired: Jul 12, 2000, 2:45 PM CDT
In force: 31 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Okaloosa County, FL

What was reported inside it

Time	Report	Where	Remark
Jul 12, 2:20 PM CDT	Hail 0.88	Crestview, FL	Nickle sized hail was reported in the community.
Jul 12, 2:20 PM CDT	Thunderstorm Wind 60 E	Ft Walton Beach, FL
Jul 12, 2:20 PM CDT	Hail 1.75	Ft Walton Beach, FL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 7.2 hours before the alert went out and 221 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1804 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 990 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KMOB 121915
SVRMOB
FLC091-121945-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
214 PM CDT WED JUL 12 2000

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OKALOOSA COUNTY IN FLORIDA
  THIS INCLUDES THE CITIES OF...CRESTVIEW...FORT WALTON BEACH...
  NICEVILLE...WRIGHT

* UNTIL 245 PM CDT

* AT 214 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM OVER VALPARAISO...OR ABOUT 3 MILES SOUTH OF   
NICEVILLE.  THE STORM WAS NEARLY STATIONARY. A SECOND SEVERE 
STORM...ALSO STATIONARY...WAS INDICATED NEAR CRESTVIEW.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVE8RS THE ROAD.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN MOBILE.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 12, 1:47 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	28 min
Jul 12, 1:54 PM CDT	Severe Thunderstorm Warning	MOB	Santa Rosa	36 min
Jul 12, 2:46 PM CDT	Severe Thunderstorm Warning	MOB	Okaloosa	44 min

Nearby

Severe Thunderstorm Warnings in Florida, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.